<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>小苏|iframeTestDemo</title>
    <style type="text/css">
        .button1 {
            background-color: #f44336;
            border: none;
            color: white;
            padding: 15px 32px;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 28px;
            margin-bottom: 100px;
            text-decoration:none;
            color: white;
        }
        #myAnchor
        {
          text-decoration:none;
          color: white;
        }
    </style>


</head>
<body style="text-align:center">
    <div id="wrapper" style="position: relative;top: 100px;left:0px;">
    <button class="button1"><a id="myAnchor" href="https://www.cnblogs.com/du-hong/">小苏</a></button></br>
    <div id="id1">I am a index page's div!</div>
    <input type="text" id="maininput" />
    <br/>
    <iframe id="frameA" frameborder="0" scrolling="no" style="left:857px;position:absolute;" src="iframe.html"></iframe>
</div>
</body>
</html>